CN106200620B - A kind of intelligent terminal outputs circuit self checking method and feedback circuit - Google Patents
A kind of intelligent terminal outputs circuit self checking method and feedback circuit Download PDFInfo
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- CN106200620B CN106200620B CN201610679242.7A CN201610679242A CN106200620B CN 106200620 B CN106200620 B CN 106200620B CN 201610679242 A CN201610679242 A CN 201610679242A CN 106200620 B CN106200620 B CN 106200620B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- Testing And Monitoring For Control Systems (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention relates to a kind of intelligent terminals to output circuit self checking method and feedback circuit, and self-test is carried out to the circuit of outputing of intelligent terminal when meeting self-test condition.It when self-test, drives and exports every time T0, the feedback signal for outputing circuit is obtained after stand-by period T1, then judge to output circuit with the presence or absence of abnormal according to feedback signal.Due to present invention driving outlet, the time T1 for outputing circuit feedback is waited for be much smaller than pull up time, therefore self checking method provided by the invention will not lead to the malfunction of relay.
Description
Technical field
The present invention relates to Substation Automation System fields, and in particular to a kind of intelligent terminal output circuit self checking method and
Feedback circuit.
Background technology
Intelligent terminal is the important equipment of intelligent substation, has and is referred to based on GOOSE service receptions by process-level network
The function of enabling, issue acquisition information and actuator is driven to realize control of export.
Intelligent terminal mainly (outputs life by sending outlet life to output switch parameter circuit (hereinafter referred to as outputing circuit)
Enable) enable the control realized to being spaced inner breaker, isolation switch, grounding switch and rapid grounding disconnecting link.Can intelligent terminal lead to
Cross and output the correct control room in circuit every these interior disconnecting link equipment, be related to intelligent substation can show conscientiously failure excision and
Scheduling controlling, and then influence safely and steadily running for entire power grid.
The circuit of outputing of intelligent terminal is usually to be made of hardware-in-the-loop and relay at present, exception occurs when outputing circuit
When, in order to timely be latched the control for outputing circuit, needs to send self-test order to outputing circuit, self-test is carried out to it.
The patent document that notification number is CN201935986U discloses a kind of self-checking circuit of output switch parameter, but uses this self-test electricity
It when road carries out self-test to outputing circuit, outputs the relay in circuit and will produce action, it is easy to order and self-test life will be outputed
Order is obscured, so outputing order to outputing to execute when circuit carries out self-test, also can not when order is outputed in execution equally
Self-test is carried out to outputing circuit, therefore relatively low using working efficiency when this self-checking circuit.
Invention content
A kind of intelligent terminal of present invention offer outputs circuit self checking method and feedback circuit, exists in the prior art for solving
The problem of outputing order can not be executed when to outputing circuit self-test.
A kind of intelligent terminal outputs circuit self checking method, and circuit is outputed to intelligent terminal when meeting the when of outputing self-test condition
Carry out self-test；The method of the self-test includes the following steps：
(1) it drives and exports every time T0；
(2) after stand-by period T1, the feedback signal for outputing circuit is obtained；
The time T1 is the hardware circuit response time for outputing circuit, which is much smaller than and outputs circuit repeat circuit
Actuation time；
(3) circuit is outputed with the presence or absence of abnormal according to the feedback signal judgement for outputing circuit.
Further, the priority of the self-test is less than the priority for outputing order, described to meet the condition for outputing self-test
Refer to not outputing order, when outputing order, interrupts self-test immediately.
Further, described that the Status Flag for outputing circuit is determined according to feedback signal, it is that will be fed back by feedback circuit
Signal is converted into level signal, and when circuit is outputed in feedback signal expression outlet, feedback circuit generates the electricity for indicating outlet
Flat, when circuit is outputed in feedback signal expression not to be exported, feedback circuit generates the level for indicating No way out.
Further, it when driving outlet, if detecting that feedback circuit generates the level for indicating No way out, generates and indicates
Output the mark of loop state exception；
When there is no driving to export, if detecting that feedback circuit generates the level for indicating outlet, generates expression and open
Go out the mark of loop state exception；
Otherwise, it generates and indicates that outputing loop state normally indicates.
Further, it is described judge to output circuit according to feedback signal it is as follows with the presence or absence of abnormal method：
(1) Status Flag for outputing circuit is determined according to feedback signal；The Status Flag is divided into expression, and to output circuit different
Normal Status Flag and expression outputs the normal Status Flag in circuit；
(2) Status Flag for outputing circuit is stored according to the principle of first in first out in fifo queue；The FIFO teams
Two Status Flags for outputing circuit are at least stored in row；
(3) circuit is outputed with the presence or absence of abnormal according to the data judgement stored in fifo queue：If a certain fifo queue
In status indicator be the Status Flag for outputing circuit exception, then be judged as outputing accordingly circuit occur it is abnormal；Otherwise sentence
Break normal to output circuit.
A kind of intelligent terminal outputs circuit self-checking feedback circuit, including the first photoelectrical coupler and the second photoelectrical coupler；
It is characterized in that, the secondary side of first photoelectrical coupler and the second photoelectrical coupler is in parallel, first photoelectrical coupler and
The secondary side of second photoelectrical coupler wherein one end is grounded, and the other end is signal output end OUT_RET1, the output end OUT_
RET1 also connects power end VCC by pull-up resistor；The output end OUT_RET1 is used for outputs level signals；First light
The primary side of electric coupler and the second photoelectrical coupler is connected, and series connection point connects dividing voltage supply end by pull-up resistor, and described first
The not concatenated one end of the primary side of photoelectrical coupler and the second photoelectrical coupler is all connected with input terminal；The input terminal is opened for receiving
Go out the feedback signal in circuit.
A kind of intelligent terminal provided by the invention outputs circuit self checking method and feedback circuit, is obtained after being exported according to driving
The feedback signal judgement for outputing circuit output circuit with the presence or absence of abnormal.Since the time T1 of present invention driving outlet is much smaller than
Pull up time, so self checking method provided by the invention will not lead to the actuating of relay, therefore it is provided by the invention
Technical solution will not obscure self-test order with order is outputed, and life is being outputed to outputing also to be able to carry out when circuit carries out self-test
It enables.
The feedback signal for outputing circuit is converted by level signal using feedback circuit, when may be implemented to output circuit self-test
High pressure is isolated with low pressure, protects the hardware device arrived involved in process of self-test.
The priority of self-test order is set as lower than outputing command prioritization, can output circuit not influencing intelligent terminal
In the case of normal work, the self-test to outputing circuit is realized.
Multiple Status Flags for outputing circuit are stored using fifo queue, are then sentenced according to the data stored in fifo queue
Disconnect out the state in circuit, can prevent self-checking feedback signal once in a while when the error occurs, the state to outputing circuit generates wrong
Judgement accidentally.And the Status Flag for outputing circuit is stored by the way of queue, directly it can determine whether using logical operation formula
Go out to output the state in circuit, algorithm is convenient and simple.
Description of the drawings
Fig. 1 is that intelligent terminal outputs circuit self-checking system structure chart in embodiment；
Fig. 2 is the circuit diagram that feedback circuit is outputed in embodiment；
Fig. 3 is to judge to output the matrix diagram of loop state in embodiment；
Fig. 4 is the flow chart that intelligent terminal outputs circuit self checking method in embodiment.
Specific implementation mode
A kind of intelligent terminal of present invention offer outputs circuit self checking method and feedback circuit, when meeting self-test condition to intelligence
The circuit of outputing of energy terminal carries out self-test.It when self-test, drives and exports every time T0, judged according to the feedback signal for outputing circuit
Circuit is outputed with the presence or absence of abnormal.
Intelligent terminal provided by the invention outputs circuit self-checking system structure chart as shown in Figure 1, CPU communication connections are programmable
Chip, programmable chip control connection M (M>0) circuit is outputed on road；Circuit is outputed per road can also by outputing feedback circuit connection
Program chip.
As other embodiment, programmable chip can be integrated on CPU, and CPU is directly connected to output circuit, to subtract
The communication connection between programmable chip and CPU is lacked.
Feedback circuit provided in this embodiment is as shown in Fig. 2, the first photoelectrical coupler OP54 and the second photoelectrical coupler
OP55；The secondary side of the first photoelectrical coupler OP54 and the second photoelectrical coupler OP55 are in parallel, first photoelectrical coupler
The OP55 pairs side of OP54 and the second photoelectrical coupler wherein one end is grounded, and the other end is signal output end OUT_RET1, described defeated
Outlet OUT_RET1 also passes through pull-up resistor R92 connection power ends VCC；The output end OUT_RET1 believes for output level
Number；The primary side of the first photoelectrical coupler OP54 and the second photoelectrical coupler OP55 are connected, and series connection point passes through pull-up resistor R93
Dividing voltage supply end is connected, not concatenated one end of primary side of the first photoelectrical coupler OP54 and the second photoelectrical coupler OP55 are equal
Connect input terminal+24VA；Input terminal+the 24VA is for receiving the feedback signal for outputing circuit.
For the input terminal+24VA for receiving the feedback signal for outputing circuit, output end OUT_RET1 connections may be programmed core
Piece is used for programmable chip outputs level signals.The dividing voltage supply end is for connecting+24V voltage sources, low tension source
For connecting -24V voltage sources, power end VCC is for connecting 3.3V voltage sources.
When driving outlet, after the response time T1 for outputing circuit, if outputing circuit normal work, output back
Discharge state is fed back in road by the input terminal+24VA of feedback circuit, and the output end OUT_RET1 of feedback circuit will present low at this time
Level.Therefore, when driving outlet, if detecting that the output end OUT_RET1 of feedback circuit is low level, circuit is outputed
It is otherwise abnormality for normal condition.
When not having driving to export, the input terminal of feedback circuit is vacant state, at this time the output end OUT_ of feedback circuit
High level is presented in RET1.Therefore, when there is no driving to export, if detecting that feedback circuit output OUT_RET1 is low electricity
Flat, then it is abnormality to output circuit.
When driving outlet, waiting outputs the circuit corresponding time as T1, which far smaller than outputs relay in circuit
The actuation time T2 of device, therefore the malfunction of relay will not be caused.
Based on above-mentioned feedback circuit, the present embodiment provides a kind of intelligent terminals to output circuit self checking method, as shown in figure 4,
The step of this method, is as follows：
(1) outlet order is judged whether there is；
(2) it drives and exports every time T0；
(3) after stand-by period T1, if detecting that the output end OUT_RET1 of feedback circuit is low level, circuit is outputed
In normal condition, it sets the Status Flag for outputing circuit to normal condition mark 0 at this time, is otherwise provided as abnormality mark
Will 1；
If not driving outlet, but detect that the output end OUT_RET1 level of feedback circuit is high level, then will
The Status Flag for outputing circuit is set as exception status flag 1；
(4) N (N are carried out to outputing circuit>1) secondary self-test, and the Status Flag in circuit will be outputed according to the original of first in first out
Then it is stored in fifo queue；
When outputing circuit progress self-test to the roads M, the Status Flag that circuit is outputed using the roads M is stored in the matrix of M*N
In, as shown in Figure 3；
(5) when the Status Flag for outputing circuit in fifo queue is to output circuit abnormality mark 1, it is judged as outputing back
Road is in abnormality；Otherwise it is judged as that outputing circuit is in normal condition；
(6) when judging that outputing circuit occurs abnormal, it is latched this outlet for outputing circuit.
In the present embodiment, the feedback information that every road is outputed to circuit is converted to Status Flag and is stored in corresponding FIFO
In queue, then output whether circuit exception occurs accordingly according to the data judgement in fifo queue.As other embodiment party
Formula may be used other modes judgement and output circuit with the presence or absence of exception, such as directly according to feedback information directly to outputing circuit
State judged.
In the present embodiment, intelligent terminal is outputed the self-test in circuit and is carried out when not outputing order, when outputing
When order, self-test is interrupted immediately, that is, the priority for outputing order is more than the priority of self-test.It, can be with as other embodiment
It is not provided with priority, does not periodically execute during self-test to output circuit progress self-test and outputs order.
In the present embodiment, the feedback signal for outputing circuit is converted by level signal by feedback circuit, then basis
The level signal of feedback circuit judges to output the state in circuit；As other embodiment, the feedback letter in circuit can will be outputed
Number it is converted into digital quantity signal, then judges whether the state for outputing circuit is abnormal according to digital quantity signal.
Specific implementation mode of the present invention is presented above, but the present invention is not limited to described embodiment.
Under the thinking that the present invention provides, to the skill in above-described embodiment by the way of being readily apparent that those skilled in the art
Art means are converted, are replaced, are changed, and play the role of with the present invention in relevant art means it is essentially identical, realize
Goal of the invention it is also essentially identical, the technical solution formed in this way is finely adjusted above-described embodiment to be formed, this technology
Scheme is still fallen in protection scope of the present invention.
Claims (5)
1. a kind of intelligent terminal outputs circuit self checking method, which is characterized in that when satisfaction outputs self-test condition to intelligent terminal
Output circuit carry out self-test；The method of the self-test includes the following steps：
(1) it drives and exports every time T0；
(2) after stand-by period T1, the feedback signal for outputing circuit is obtained；
The time T1 is the hardware circuit response time for outputing circuit, which is much smaller than the action for outputing circuit repeat circuit
Time；
(3) circuit is outputed with the presence or absence of abnormal according to the feedback signal judgement for outputing circuit；
It is as follows with the presence or absence of abnormal method that circuit is outputed according to feedback signal judgement：
(1) Status Flag for outputing circuit is determined according to feedback signal；The Status Flag, which is divided into, indicates to output circuit exception
The normal Status Flag in circuit is outputed in Status Flag and expression；
(2) Status Flag for outputing circuit is stored according to the principle of first in first out in fifo queue；In the fifo queue
At least store two Status Flags for outputing circuit；
(3) circuit is outputed with the presence or absence of abnormal according to the data judgement stored in fifo queue：If in a certain fifo queue
Status indicator is the Status Flag for outputing circuit exception, then is judged as that outputing circuit accordingly exception occurs；Otherwise it is judged as
It is normal to output circuit.
2. a kind of intelligent terminal according to claim 1 outputs circuit self checking method, which is characterized in that the self-test it is excellent
First grade is less than the priority for outputing order, and it refers to not outputing order that the satisfaction, which outputs the condition of self-test,；When outputing order
When, self-test is interrupted immediately.
3. a kind of intelligent terminal according to claim 1 outputs circuit self checking method, which is characterized in that described according to feedback
Signal determines the Status Flag for outputing circuit, is to convert feedback signal to level signal by feedback circuit, works as feedback signal
When expression outputs circuit and has outlet, feedback circuit generates the level for indicating outlet, when feedback signal indicates that outputing circuit does not have
When outlet, feedback circuit generates the level for indicating No way out.
4. a kind of intelligent terminal according to claim 3 outputs circuit self checking method, which is characterized in that
When driving outlet, if detecting that feedback circuit generates the level for indicating No way out, generates and indicate to output loop state
Abnormal mark；
When there is no driving to export, if detecting that feedback circuit generates the level for indicating outlet, generates expression and output back
The mark of line state exception；
Otherwise, it generates and indicates that outputing loop state normally indicates.
5. a kind of intelligent terminal outputs circuit self-checking feedback circuit, including the first photoelectrical coupler and the second photoelectrical coupler；Its
It is characterized in that, the secondary side of first photoelectrical coupler and the second photoelectrical coupler is in parallel, first photoelectrical coupler and the
The secondary side of two photoelectrical couplers wherein one end is grounded, and the other end is signal output end OUT_RET1, the output end OUT_RET1
Power end VCC is also connected by pull-up resistor；The output end OUT_RET1 is used for outputs level signals；The first photoelectricity coupling
Clutch and the series connection of the primary side of the second photoelectrical coupler, series connection point connect dividing voltage supply end, first photoelectricity by pull-up resistor
The not concatenated one end of the primary side of coupler and the second photoelectrical coupler is all connected with input terminal；The input terminal is outputed back for receiving
The feedback signal on road.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679242.7A CN106200620B (en) | 2016-08-17 | 2016-08-17 | A kind of intelligent terminal outputs circuit self checking method and feedback circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610679242.7A CN106200620B (en) | 2016-08-17 | 2016-08-17 | A kind of intelligent terminal outputs circuit self checking method and feedback circuit |
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| CN106200620B true CN106200620B (en) | 2018-11-09 |
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| CN113742124B (en) * | 2021-08-25 | 2024-02-13 | 河南源网荷储电气研究院有限公司 | Intelligent IO (input/output) self-checking method and system based on CAN (controller area network) bus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201935986U (en) * | 2010-12-10 | 2011-08-17 | 许继集团有限公司 | Self-checking circuit for switch quantity output |
| CN102129227B (en) * | 2010-12-23 | 2013-02-13 | 国电南京自动化股份有限公司 | Driving loop for automatic device and starting loop thereof |
| CN102122142B (en) * | 2011-01-12 | 2013-09-18 | 株洲变流技术国家工程研究中心有限公司 | Switching value control method for high-voltage frequency converter and control plug-in thereof |
| CN103023149A (en) * | 2012-12-12 | 2013-04-03 | 天津市电力公司 | Intelligent power distribution terminal and intelligent power distribution system based on IEC61850 |
| CN104375034B (en) * | 2014-11-07 | 2017-02-08 | 北京交控科技股份有限公司 | On-board equipment on-off output channel online self-checking system of subway signal system |
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